Journal of Economic Entomology (1997) 90, 1635-1640

M.E. Tzanakakis, N.T. Papadopoulos, B.I. Katsoyannos, G.N. Drakos and E. Manolakis (1997)
Premature fruit drop caused by Eurytoma amygdali (Hymenoptera: Eurytomidae) on three almond varieties
Journal of Economic Entomology 90 (6), 1635-1640
Abstract: A test was conducted to determine the effect of oviposition by Eurytoma amygdali Enderlein on fruit drop on almond trees. Almond twigs of 3 cultivars were oviposited upon either by wasps released on caged almond twigs or by the natural orchard population for various periods. Infested fruits suffered a heavy premature drop in the "Texas" (Mission) and "Ferragues", but not in "Truoito". To control this insect, systemic insecticides are used to kill the hatching larvae in the fruit. The current results suggest a change in control strategy, using adulticidal rather than larvicidal sprays, to prevent oviposition in varieties susceptible to such fruit drop.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Nikos T. Papadopoulos, Byron I. Katsoyannos

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Eurytoma amygdali	Almond (Prunus dulcis)